JSFiddle - React, Tailwind, and code Playground
by mischa
JavaScript
var label = '[GoogleMail]/Sent Mail';
//var label = '[Gmail]/Sent Mail';
r = /\[(Gmail|GoogleMail)\]\//;
//r = /\[Gmail\]\//;
if (label.match(r)) {
label = label.split(/\//)[1];
document.write (label);
} else {
document.write('no match');
}